import java.util.Scanner;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 666
 * Date: 2023-04-18
 * Time: 22:29
 */
public class test0 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        while (scanner.hasNext()){
          double n = scanner.nextDouble();
          double r = scanner.nextDouble();

            if(2*r*3.14 < n){
                System.out.println("YES");
            }
            else {
                System.out.println("NO");
            }
        }
    }
}
